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Finding the Fourth Proportional to 43,341.99, 65,009.75 and 15,639.99

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Solution

The fourth proportional to 43,341.99, 65,009.75 and 15,639.99 is: 23,458.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,341.99 : 65,009.75 = 15,639.99 : x
  2. Step 2: Convert to fraction form
    43,341.99/65,009.75 = 15,639.99/x
  3. Step 3: Cross multiply
    43,341.99x = 65,009.75 × 15,639.99
  4. Step 4: Simplify right side
    43,341.99x = 1,016,751,761.70
  5. Step 5: Solve for x
    x = 1,016,751,761.70/43,341.99
  6. Step 6: Final answer
    x = 23,458.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.